Marcin Wichary: I pressed ⌘B, you never know what happened next

I love talks by Marcin and had the privilege to see him live a couple of times. This talk is about bold fonts. And all the variations they can have. It's a mess, but presented so funny and engaging that you not only learn a lot, but see regular tasks on typography in a slightly different light. Highly recommended. It's a joy to watch!